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Usher performs at the Clinton Foundation's Decade of Difference concert on October 15, 2011 at the Hollywood Bowl in Hollywood, California. The concert celebrates 10 years of the former US president's Clinton Foundation. RESTRICTED TO EDITORIAL USE AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)Photo: ROBYN BECK/2011 AFP

Do not underestimate the hologram. Not only can it rap and freak people out at music festivals, but it can also dance, as Usher will demonstrate at an upcoming London concert. The singer will be joined onstage by a "virtual dance squad" made up of avatars created by an online audience — so like a group Dance Dance Revolution game, but with an actual (paying) audience. Next up: an all-Madden season of NFL football. No injuries! The future is magical.